EarthRef.org Reference Database (ERR) -- Buick et al. 1998

EarthRef.org Reference Database (ERR)
Development and Maintenance by the EarthRef.org Database Team

Detailed Reference Information

Buick et al. 1998

Buick, I.S., Uken, R., Gibson, R.L. and Wallmach, T. (1998). High-delta C-13 Paleoproterozoic carbonates from the Transvaal Supergroup, South Africa. Geology 26(10): 875-878.

Marbles from the Transvaal Supergroup (Kaapvaal craton, South Africa) record two positive carbon isotope excursions to average delta(13)C(carbonate) values of similar to+6 parts per thousand to +8 parts per thousand (relative to V-PDB), separated by carbonates with normal-marine delta(13)C values (similar to 0 parts per thousand +/- 2 parts per thousand). These elevated values have been preserved through metamorphic devolatilization. Together with an already documented high-C-13 excursion in overlying rocks, three separate positive carbon isotope excursions occurred on the Kaapvaal craton in the interval 2.43 to 1.93 Ga. It is not yet clear how many of these excursions reflect global rather than local processes.

BACKGROUND DATA FILES

	Abstract

	Table Dr1A
	Table Dr1B

	Analytical Methods & Sampling
	Stable Isotope Data

Keywords
isotope geochemistry, bushveld complex, rocks, sedimentary, province, oxygen, age

Journal
Geology
http://www.gsajournals.org/gsaonline/?request=search-simple

Publisher
The Geological Society of America
P.O. Box 9140
Boulder, CO 80301
1-303-447-2020
1-303-357-1071
member@geosociety.org